Sewing-machine cloth-presser.



C. W. THOMAS.

SEWING MACHINE CLOTH PRESSER.

APPLICATION TILE!) MAY1I.I9I5.

1,234,965. l JJ Patented July 31, 1917.

UNUFED SATES FATENT OFFE.

CARLYLE W. THOMAS, OF BRIDGEPORT, CONNECTICUT, ASSGNOR T0 THE SINGERMANUFACTURING COMPANY, A CORPORATION OF NEW JERSEY.

SEWING-MACHINE CLOTI-T-PRES-SER.

Application filed. May 11, 1915.

To all whom t may concern:

Be it known that I, CARLYLE WV. THOMAS, a citizen of the United States,residing at Bridgeport, in the county of Fairfield and State ofConnecticut, have invented certain new and useful improvements inSewing- Machine Cloth-Pressers, of which the following is aspecification, reference being had therein to the accompanying drawings.

This invention relates to improvements in cloth-pressers for sewingmachines, more particularly that class of devices employed foreifecting, at a single operation, the guiding and scaming together ofunevenly distributed superposed plies of leather or heavy fabrics, andhas for its object to provide a combination of elements adjustable withrespect to each other, to the line of seam formation and to the freeedges of the material, the cloth-presser being adjustable out of itsoperative position to permit of the thread- .bobbin being removed andreplaced in the replenishing of the under thread.

In the accompanying drawings, which form a part of the specification,Figure 1 is a front side elevation of the present improvedcloth-presser, together with the front and back slide-plates and aportion of the sewing machine bed-plate into which said slide-plates aremounted, Fig. 2 a plan on the line F ig. 1, Fig. 3 an elevation, partlyin full lines and partly in section, of the head of the sewing machinebracket-arm, the cloth-presser and its carrying bar, and the lower endportion of the needle-bar, Fig. 4 a rear side elevation of the presentcloth-presser, 'together with a portion of its carrying bar, Figs. 5, 6and 7 details later to be referred to, and Fig. 8, one form of productillustrating the application of the present invention. l

The present invention is shown in connec tion with one form ofloop-taker mechanism common to Singer sewing machines, and although thepresent invention is applicable to machines employing only a singleneedle, it is preferably herein shown and described in connection with amultiple needle machine.

Referring to the figures, 1 represents the front end portion of a sewingmachine bedplate into which is slidably mounted the front and bachslide-plates 2 and 3 respectively, 4 the throat or needlefplate securedto the bed-plate by screw 5, said throat-plate Specification of LettersPatent.

Patented July 31, 191 '7.

seriai No. 27,294.

only, Fig. 3), yforming a partl of the head 16 of one form of commonlyemployed over- Vhanging sewing machine bracket-arm (not shown), itsopposite end being housed in a bushing 17 threaded into a lug 1S, (shownin section only, Fig. 3), formed integral with the upper portion of saidhead in a manner common to sewing machine construction, said bar beingprovided with one form of commonly employed lifting lug 19, (shown insection only, Fig. 3), which is acted upon in opposition. to theresiliency of the spring 9.0 by one form of commonly employed liftinglever 20 to raise the clothpresser out of engagement with the worls.being stitched.

21 represents aclOth-presser carrying bar mounted in the tubularcloth-presser bar 15 and at its lower end provided with an enlargedportion 22 slotted to receive the shank 23 of the cloth-presser bracket24, a screw 25 acting to secure said bracket against accidentaldisplacement, and into said enlarged portion is threaded a stud- A screw26 which normally registers with a V-shaped notch 27 in a pinch collar28 carried by said cloth-presser bar. 29 denotes a screw threaded intothe uppen end of the cloth-presser carrying bar and between the head ofsaid screw and the upper end of said cloth-presser bar is interposed aspring 30, thus permitting, at the will. of the operator, verticalmovements of the cloth-presser carrying bar independently of thevertical movements of the cloth-presser bar, for a purpose later to beexplained. 31 represents the clotlrpresser frame into the front end ofwhich is suitably journaled the clothpresser rollers 32 and 33 providedwith guide-flanges 34 and 35 respectively, the opposite end of saidframe being provided with a frame-bracket 36 having a groove 37 and anelongated opening 38. 39 denotes a rocking guide-bracket provided with aguideway 40 and fulcrum-pin 41, the latter entering an opening 42 formedin the clothvpresser bracket 24, for a purpose later to be explained.

43 denotes a holding or tightening screw provided with a crank-arm 44and threaded portion 45 (shown in dotted lines only, Fig. 3) whichpasses 'through the opening 38 and threaded into the opening 46 formedin said guide-bracket, the latter being sel cured against accidentaladjustment by the screws, as 4T, passing through the elongated opening48 (shown in dotted lines only, Figs. 1 and 7) formed in the bracket 24and threaded into the openings, as 49, formed in the bracket 39.

50 and 51 represent stop or registering brackets adjustably secured byscrews, as 52, threaded into the cloth-presser bracket 24 forcontrolling the adjustment of the framebracket 36 and cloth-presserframe 31 in opposite directions across the line of seam formation, asshown in full and dotted lines F ig. 1. 53 denotes a needle-guardadjustably secured by screws, as 54, threaded into the openings, as 55,formed m the bracket 24, the wall 56 of the angular portion-57 acting tohold the needles against glancing when entering the materials.

I-Iaving set forth the details in construction, the following relativeadjustments and coperation of the parts will be readily understood.

To effect the seaming together of the materials as represented by Fig.8, the clothpresser frame 31 first occupies the adjustment shown in fulllines Figs. 1 and 4, with one end of the bracket 36 in register with thestop 51 when the plies of materials are positioned beneath thepresser-foot with the free edge 58 of the ply 59 in engagement with theanges 34 and 35 and the feed-dog 9 in alinement with the periphery ofsaid fianges, and owing to the slight incline given the feed-rollerswith respect to the upper surface of the needle-plate 4, the feed actionof the feed-dog 8, while sufhcient to assist in advancing the severalplies, will permit of such manual control of the ply 59 as will allow ofits fre-e edge being held in guiding relationship with said flanges.

After the double seam 60 has been completed the screw 43 is turned torelease the bracket 36, when the latter, together with the cloth-presserframe, is adjusted and secured in dotted line position, Figs. 1 and 4,controlled by the stop 51, when the materials are placed beneath thepresser-foot in the same relationship, with respect to the iianges 34and 35, as when forming the double seam 60 with the feed-dog 8 acting onthe materials between the finished double seam and the line of thedouble seam 61, the fianges having been adjusted out of effective actionwith the feed-dog 9, thus permitting such manual control of thematerials as is essential to the holding of the free edge 5S in guidingrelationship with the fianges.

When it is desired to change the angular relationship of thecloth-presser frame 31 with respect to the upper surface of theneedle-plate 4, the operator loosens the screws, as 47, and rocks theguide-bracket 39 on its fulcrum-pin 41 and again secures theguide-bracket, and when it is desired to replenish the under thread theoperator by moving the cloth-presser downward in opposition to theresiliency of the spring 30, rele-ases the stud-screw 26 from engagementwith the notch 27 in the pinch collar 28 and gives to the cloth-pressercarrying bar a half turn, thus carryingthe cloth-presser out of verticalalinement with the bobbins, as 14.

Having thus set forth the nature of the invention, what I claim hereinis 1. In a cloth-presser for sewing machines, the combination with aneedle-plate, feed actuating elements, a yieldingly depressedcloth-presser frame supported by the head of the sewing machinebracket-arm and means for giving to said frame vertical movements, ofcloth-presser rrollers journaled in said frame and at one end onlyprovided with edge guiding fianges to direct the material being actedupon to the action of the stitch-forming mechanism.

2. In a cloth-presser for sewing machines, the combination with aneedle-plate, feed actuating elements, a yieldingly depressedcloth-presser frame supported by the head of the sewing machinebracket-arm and means for giving to said frame vertical movements, ofcloth-presser rollers journaled in said frame and at one end onlyprovided with edge guiding ianges to direct the material being actedupon to the action of the stitch-forming mechanism, one of saidcloth-presser rollers being located in front of and the other at therear of the line of needle actuation, as viewed by the operator.

3. In a cloth-presser for sewing machines, the combination with aneedle-plate, feed actuating elements, a cloth-presser bracket supportedby the head of the sewing machine arm, a cloth-presser frame carried byand adjustable laterally with respect to said bracket and means forgiving to said frame and bracket vertical movements, of clothpresserrollers journaled in said frame and provided with edge guiding anges todirect the material being acted upon to the action of the stitch-formingmechanism.

4. In a cloth-presser for sewing machin/ff the combination with aneedle-plate, feed actuating elements, a cloth-presser bracket supportedby the head of the sewing machine bracket-arm and carrying a rockingguide-bracket, a cloth-presser frame slidably connected with saidrocking guide bracket, means for Securing said frame in given adjustmentwith respect to the latter and to the upper surface of said needleplateand means for giving to said brackets and frame synchronously arrangedvertical movements, of cloth-presser rollers journaled in said frame andprovided with edge guiding ianges to direct the material being actedupon to the action of the stitch-forming mechanism.

5. In a cloth-presser for sewing machines, the combination with aneedle-plate, feed actuating elements, a resiliently depressed tubularcloth-presser bar mounted in suitable bearings formed in the head of thesewing machine bracket-arm, a cloth-presser carrying bar resilientlysuspended in said cloth-presser bar, a cloth-presser bracket carried bysaid cloth-presser carrying bar and provided with a rockingguide-bracket, a cloth-presser frame connected with the latter and meansfor giving to said brackets and frame synchronously arranged verticalmovements, of cloth-presser rollers journaled in said frame and providedwith edge guiding flanges to direct the material being acted upon to theaction of the stitchorming mechanism.

In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

CARLYLE W. THOMAS. Witnesses:

F. E. BRADLEY, LEWIS TRIESNER.

Copies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents, Washington, D. G.

